2-Pentyne

CAS Registry Number®

627-21-4

CAS Name

2-Pentyne

Molecular Formula

C5H8

Molecular Mass

68.12

Cite this Page

2-Pentyne.   CAS Common Chemistry.   CAS, a division of the American Chemical Society, n.d.   http://commonchemistry.cas.org/detail?cas_rn=627-21-4 (retrieved 2025-03-28) (CAS RN: 627-21-4).  Licensed under the Attribution-Noncommercial 4.0 International License (CC BY-NC 4.0).

Compound Properties

  • Boiling Point (1)

    56.02 °C @ Press: 760 Torr

  • Melting Point (2)

    -109.3 °C

  • Density (3)

    0.7103 g/cm³ @ Temp: 20 °C

Source(s)

Other Names and Identifiers

InChI

InChI=1S/C5H8/c1-3-5-4-2/h3H2,1-2H3

InChIKey

InChIKey=NKTDTMONXHODTI-UHFFFAOYSA-N

SMILES

C(CC)#CC

Canonical SMILES

C(#CCC)C

Other Names for this Substance

  • 2-Pentyne
  • 1-Ethyl-2-methylacetylene
  • Ethylmethylacetylene
  • Methyl ethyl acetylene

CAS INSIGHTSTM
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